3855850992 has 160 divisors (see below), whose sum is σ = 12856796160. Its totient is φ = 1083559680.

The previous prime is 3855850981. The next prime is 3855850997. The reversal of 3855850992 is 2990585583.

3855850992 is a `hidden beast` number, since 3 + 85 + 58 + 509 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855850997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174013 + ... + 194915.

It is an arithmetic number, because the mean of its divisors is an integer number (80354976).

Almost surely, 2^3855850992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3855850992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428398080).

3855850992 is an abundant number, since it is smaller than the sum of its proper divisors (9000945168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3855850992 is a wasteful number, since it uses less digits than its factorization.

3855850992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20988 (or 20976 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 54.

The square root of 3855850992 is about 62095.4989673165. The cubic root of 3855850992 is about 1568.0987698958.

The spelling of 3855850992 in words is "three billion, eight hundred fifty-five million, eight hundred fifty thousand, nine hundred ninety-two".